Cleavage kinetics of human embryos is indicative of ability to develop to blastocyst and
implant. Recent advances in time-lapse microscopy have opened new and important …

We believe that standard morphological assessment should remain the gold standard to
initiate embryo evaluation; however, if possible, it can be complemented with the use of …

Day 3 cleavage embryo transfer is routine in many assisted reproductive technology centers
today. Embryos are usually selected according to cell number, cell symmetry and …

Single blastocyst transfer is regarded as an efficient way to achieve high pregnancy rates
and to avoid multiple pregnancies. Risk of cancellation of transfer due to a lack of available …

Abstract The Embryology Interest Group of the Association for the Study of Reproductive
Biology has established a system of embryo scoring based on the bibliography published to …

STUDY QUESTION Does cell number on Day 3 have an impact on pregnancy outcomes in
vitrified-thawed single blastocyst transfer cycles? SUMMARY ANSWER A low Day 3 cell …

OBJECTIVE: To determine the influence of delayed compaction and fragmentation on the
developmental capacity of morulas. DESIGN: Prospective study. SETTING: University IVF …

Purpose To study the relationship between blastomere number and pregnancy outcomes of
day 3 embryo transfers. Methods This retrospective cohort study included 2237 fresh single …

Purpose To determine the developmental competence of fast-cleaving D3 embryos.
Methods Retrospective study including 4028 embryos from 513 PGT-A cycles performed …

Purpose To understand cell cycle controls in the 8-Cell human blastomere. Methods Data
from whole human genome (43,377 elements) microarray analyses of RNAs from normal 8 …